The chancel is lit only by its east window, which is of two pointed lights with a round reararch and probably dates from the 13th century, though its head was altered at a much later period.
Near the west end of the north wall is a low-side window of one square-headed light, now blocked, and on the south, opening to the chapel, is a pointed arch supported by semi-octagonal responds with moulded capitals and bases.
Opposite to this on the south is another tall single-light window which has been similarly treated, but was originally of two lights and probably dates from a century later.
The chancel has a segmental plastered ceiling, and the nave a low-pitched open-timber roof of the late 15th century.
The porch is of slightly earlier date than the aisle and originally had a gable over the entrance, the outline of which is still visible.
It is lighted by a plain square-headed window in the west wall, and has an entrance on the south with a depressed arch in a square head.
The doorway has a four-centred arch in a square head with traceried spandrels, and its outer mouldings are continuous with those of the window above, so that they form one composition.
On the chancel floor there is a half-length brass of a priest in mass vestments, with the inscription Hic jacet Hugo Parke quondam istius ecclie Rector in artibus magister sacreque theologie bacularius.
In the tower is a large iron-bound poor-box dating probably from the late 16th century, with two holes for money, and in the south chapel are two grotesquely carved wood panels, while some fragments of old glass, mounted in a frame, are placed on the north wall of the nave.
An inquest found that the priest of Great Loughton, John Gervyes, had killed him with an arrow worth 1d.